Indicate hydration level in another way

“Vessyl can even tell you whether you need to drink more water by displaying a vivid blue line that rises and falls dependent upon your hydration level. Vessyl calls this part of the technology “Pryme,” and it can be displayed independently on the cup itself, or within the app to show you not only how hydrated you are, but for how long you remained at optimal hydration levels. All of which coincides with the Vessyl mantra of empowering people to make better choices.”

It’s a very sexy and very interesting product. I do wonder though, how many people will be willing to pay US$200 for a mug… and then put everything they drink all day in it? Take it to Starbucks in the morning? To Jamba Juice for lunch? To the pub after work? And will they rinse it in between? And if you do rinse it, will that be logged as drinking 13oz of water?

It’s easy to be negative about Vessyl or Compass H2O or anything else, but it just seems like a very expensive mug that I have to drag around all day. When I go to the roof of MDP for a party, instead of a red wine glass I’m going to ask the server to put my wine in this white plastic thing?

I’m also unclear, since it’s not actually sensing your body hydration, but instead your intake, how does it know if you’ve been lying in an air-conditioned bedroom all day, or out running 4-minute miles in blazing heat?